Which system of measurement is often used in the math section of the HESI A2?

The metric system is widely utilized in the math section of the HESI A2 because it is a decimal-based system of measurement that is easier to use for calculations, especially in scientific contexts. The metric system includes units such as meters, liters, and grams, which can be easily converted by simply moving the decimal point. This simplicity and universality make it a preferred choice for educational assessments and professional fields, particularly in healthcare where precise measurements are crucial.

In contrast, the imperial and customary systems, which include units like inches, pounds, and gallons, can complicate calculations due to their varying conversion factors. Scientific notation is not a measurement system but a way to express very large or very small numbers in a concise format. Therefore, the metric system's clarity and ease of use make it the most relevant choice for the HESI A2 math section.